Locomotive valve-gear.



H; J. PILLIOD. LOGGMOTIVE VALVE GEAR. APPLICATION FILED JUNE 28, 1910.

Patented Jam 31, 1911.

4 SHEETS-EHEET 1.

My g .m i Q fin P w 0 L mm m Q m% R Z a xw 0 UN Nw d M m mw m m m mo" hm H. J. PILLIOD.

LOGOMOTIVE VALVE GEAR.

APPLICATION FILED JUNE 28, 1910. 982,991 Patented Jan. 31, 1911.

4 SHEETS-SHEET 3.

swvamtoz H. J. PILLIOD.

LOGOMOTIVE VALVE GEAR.

APPLIOATIOH rum) JUNE 28, 1910.

Patented Jan. 31, 1911.

4 snug-sum 4.

wi/tmeooo L attozmua HENRY J. PILLIOD, OF CHICAGO, ILLINOIS, ASSIGNOR TOTHE PILLIOD BROTHERS -COMPANY, OF TOLEDO, OHIO.

LOCOMOTIVE VALVE-GEAR.

Specification of Letters Patent.

Patented Jan. 31, 1911.

To all ivhom a may mm.-

Be it known that 1, HENRY J. Pnmron,

a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented a new and useful LocomotiveValve-Gear, of which the following is a specification.

The invention relates to improvements in valve gears for locomotives.

The object of the present invention is to improve the construction ofvalve gears for locomotives, more especially the means for mounting andactuating the imparting motion device, described and claimed in acompanion application, filed May 2,1910, Serial No. 558,822, and toenable the valve gear, the imparting motion device and the means forconnecting the latter to the actuating parts of a locomotive to bemounted on the frame of the engine, whereby uniform rotative speedundisturbed and unaffected by vibration and lateral motion, such asoccurs in locomotive gears by reason of the yieldingof the springs inrunning over inequalities of the track, will be secured and suchvibration and lateral movement prevented from affecting the travel ofthe valve and the uniform distribution of steam.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawings, and pointed out in the claimshereto appended. i

In the'drawings:-Figure 1 is a side elevation of aportion of alocomotive provided with a valve gear, constructed in accordance withthis invention. Fig. 2 is a lan view of the same. Fig. 3 is an enlargeelevation of the valve gear. Fig. 1 is a detail perspective view of themechanism for trans responding parts in all the figures of the drawings.

The specification 1s a'disclosure of one form of the invention, whilethe claims de fine the actual scope of the invention.

In the embodiment of the invention illustrated in the accompanyingdrawings, the valve gear is equipped with an imparting motion device,constructed as shown and described in the aforesaid application, andcomprising a central rotary shaft or pivot composed of two sections 1and 2, and equipped with two cranks 3 and 4, arranged at an angle ofninety degrees. The imparting motion device is mounted in the gear frame5, which is provided at opposite sides with depending bearings 6,receiving the sections 1 and 2 of the rotary shaft. The crank 3 iscomposed of two arms 7 and 8, rigidly secured to the inner ends of thesections 1 and 2 of the central shaft or pivot, and connected by a crankpin 9, fixed to the arm 7 and provided with a central bearing portionand having a tapered conical portion 10 to lit in a correspondingopening of the arm 8 of the crank 3. The crank pin 9 is threaded beyondthe conical portion to receive a nut 11, which retains the arm 8 on theconical portion of the crank pin. The crank 1 is suitably fixed to theouter end of the section 1 of the central shaft or pivot.

The imparting motion devices of the valve gears at opposite sides of thelocomotive are actuated to secure uniform rotative speed by means of apair of transverse rock shafts 12 and 13, arranged in parallelism inadvance of the impartingmotion devices and extending entirely across thelocomotive and "journaled in bearin sl t and 15 of opposite brackets 16,secure to the gear frames at the front ends thereof, or to other fixedportions of the locomotive. The transverse rock shaft 12 is provided atits ends with long arranged at the left hand side of the loco motive,while the short arms of the two rock shafts are also located atopposite'sides of the locomotive; The cranks 3 of the imparting motiondevices are located midway between the sides of the valve gear frames,

' the drawings. The armsof the rock shafts and the other cranks 4 arearranged beyond the valve gear frames at the outer sides thereof, asclearlyillustrated in Fig. 2 of are arranged at the terminals thereof,and the left hand end of the rock shaft 12 is arranged in alinement withthe crank 3 of the imparting motion device at the left hand side of thelocomotive. The other end of the rock shaft 12 is extended to arrangeits long arm in alinement with the outer crank 4 of the imparting motiondevice at the right hand side of the locomotive. The rock shaft 13 isreversely arranged, being extended at the left hand side to position thelong arm in alinement with the outer crank of the left hand impartingmotion devices, and its other end being terminated short. of the righthand end of the rock shaft 12 in order to arrange its short arm in thelongitudinal plane of the crank 30f the right hand imparting motiondevice.

The long arms 17 and 19 constitute levers and are connected at theirlower ends by approximately horizontal links 21 with plates 22, securedto the cross heads 23 of piston rods 24, and extending rearwardlytherefrom to provide approximately horizontal projecting arms. The links21, which are disposed longitudinally of the locomotive, extendrearwardly from the lower ends of the arms or levers l7 and 19, andtheir.

front terminals 25 are bifurcated to straddle the arms orlevers 17 and19 and are pivoted to the same by bolts 26, but any other form ofpivotal connection may be employed. The rear ends of the links 21 arepivoted to the projecting plates or arms 22 of the cross head by bolts27, or other suitable fastening means. The long arms or levers 17 and 19are also connected at an intermediate point by links or rods 28 with thecranks or crank .elements of the imparting motion devices.

The links or rods 28, which are approxi mately horizontal, extendlongitudinally of the locomotive and are pivoted at their front ends tothe arms or' levers 17 and 19 by bolts 29, and their rear ends aremounted on the crank pins or pivots 30 of the cranks 4 of the impartingmotion devices. 7

The short arms 18 and 20 of the transverserock shafts are connected bylongitudinally disposed links or rods 31 with the cranks 3 of theimparting motion devices. The links or rods3l, which are alsoapproximately horizontal, are pivoted at their front ends to the lowerterminals of the short links 18 and 20 by bolts 32, or other fasteningmeans, and their rear ends are mounted on the crank pins 9 of the cranks3 of the imparting motion devices. The main cranks (not shown) of thelocomotive are set at nal speed or motion, the other cross head istraveling at its greatest speed.

By connect-ing each imparting motion de vice with each of the crossheads, a uniform rotative speed unaffected by the vibration and lateralmotion of the locomotive results in each of the imparting motiondevices. The crank 3 of each imparting motion device is also connectedby. an eccentric arm or rod 34 with avalve gear, located in rear of theimparting motion device and having a reverse of the Marshall type,constructed substantially the same as that illustrated intheaforesaid'application. The eccentric arm or rod 34, which correspondswith the eccentric arm of' the said application, extends rearwardly fromthe imparting mo- -tion device, its front end 35, which is con" nectedwith the imparting motion device, being preferably forked or bifurcatedto straddle the rear end of the link or rod 31. i

The eccentric arm 34, which receives a longitudinal reciprocatory motionfrom the crank of the imparting motion device, is-

connected at an intermediate point by a link 36 with a rocker arm 37,located above the I eccentric arm and pivoted at one end by a transverserod or pin 38, which is mounted in suitable bearings 39 of the sides ofthe gear frame. The upwardly extending link '36 has its ends bifurcatedto straddle the eccentric arm and the rocker arm and is secured to thesame by pivot bolts 40 and 41. The rocker arm 37 is provided at itspivoted end with a transverse sleeve 42, extending across the spacebetweenthe bearings 39 and suitably fixed to the shaft or pivot 38,which also carries a depending arm 43, arranged at an obtuse angle tothe rocker arm 37 and co-acting with the same to form a bell crank.

The reciprocatory motion of the eccentric arm or rod 34 and the up anddown movement of the same through the oscillatory means hereinafterdescribed, cause the pivot 40 to travel in an elliptical path. The free.end of the downwardly extending arm 43 is connected by a pivot bolt 44to the rear end 45 of a link or rod 46, which has its front end 47bifurcated and pivoted by a bolt 48 to the valve rod 49 of thelocomotive. The bell crank formed by the rocker 37 and the depending arm43 may be reversed to arrange the valve gear to suit either inside oroutside admission valves. The rear end ssaeei of the eccentric arm orrod 34 is connected by an end link with the free rear end 51 of a rockerarm 52, which is pivoted at its other end 53 by a transverse pin 54,mounted in spaced bearings 55 of the sides of the gear" frame. The link50. has its terminals bifurcated and is connected by upper and lowerpivot bolts 51 and 52 to the rear end of the eccentric arm or rod and tothe rocker arm 52, which are arranged in the terminal bifurcations ofthe link 50. The rocker arm 52 is connected at an intermediate point bya pivot bolt 56 to the upper end of a radius link 57, having its upperportion 58 bifurcated to receive the rocker arm 52 and pivotally mountedat its lower end within and carried by a radius yoke 59. The radius yoke59 is composed of two sides or members connected together at their lowerends 60 by a bolt 61., or other suitable fastening means and provided attheir upper ends with laterally extending pivots 62, arranged inopposite bearings 63 of a reversing yoke 64. The lower end of the radiuslink 57 is arranged between the lower ends of the sides or members ofthe radius yoke, .and is pivoted to the same by the bolts 61. The upperpivots or journals 62 of the radius yoke are secured in the bearing 63by bolts 65, or other suitable fastening devices. The radius yoke isconnected by a reciprocatory rod or member 66 with the eccentric arm orrod 34, being pivoted to the latter by a bolt 67 and to the former bythe pivot bolt 61. The reversing yoke is substantially oblong, beingcomposed of spaced sides connected at their upper ends by a transversetop portion 68. The sides of the reversing yoke are provided at theirlower portions with laterally extending pivots or journals 69, which arearranged in bearings 70 of the sides of the gear'frame. One side of thereversing yoke is provided with an integral horizontally projecting arm71 to which is pivoted by a bolt 7 2 the forward end of a reach rod 73.The reach rods 73 of the valve gears at opposite sides of the locomotiveare connected at their rear ends to upwardly extending arms 74 and 75 ofa reversing shaft 76, journaled in suitable bearings and connected tothe frame of the locomotive. The arm 74 is extended above the reach rod73 and is connected with an ordinary reversing yoke (not shown). Theireversing yoke, the radius yoke, and the radius link constitute a 7reverse or reversing mechanism, and is a modification of the Marshallreverse, and the radius yoke is adapted to be swungto either side of thevertical center to reverse the engine, and is capable of being arrangedat various points between its'extreme positions to vary the cut-off. Thereverse or reversing mechanism and the means for mounting and connectingthe same with the eccentric arm or rod constitute the valve ellipsewhere there is an equal amount of travel on each side of the center lineof motion modified by the radius of the intermediate link, and the endpivot describes a very distorted or elongated ellipse and compensatesfor and dissipates the evils in valve motion resulting from theangularity of the eccentric arm or rod. Heretofore when the valveactuating mechanism has been connected to the eccentric rod or arm at apoint intermediate of the ends thereof by a pivot traveling in anelliptical path, the forward end of the eccentric arm has alwaystraveled in a fixed or true are or arcuate path, and the ellipsedescribed by .the intermediate pivot connected with the valveactuatingmechanism is always irregular, being greater on the top side of theellipse than on the bottom causeunequal valve travel and unequaldistribution of steam. This evil was produced by connecting the end ofthe eccentric arm or roddirectly to the radius link of a reverse of theMarshall type, and has been corrected by the employment of the rockerarm and the link connection, which produce the elliptical path ofmovement of the end 52 of the eccentric arm or rod. An equal travel ofthe valve is thus secured during both strokes, producing uniformadmission and release at each end of the cylinder and cut-01f atequi-distant points at each end thereof. As the cylinders, pistons andcross heads together with the imparting motion devices, the valve gearsand the mechanism for transmitting motion from the cross heads to theimparting motion devices are all mounted on and carried by the frame ofthe locomotive, perfect motion of uniform rotative speed is secured, andthe action of the valve is undisturbed and unaffected by the vibratorylateral movement such as occurs in valve gears-through the yielding ofthe springs in running over inequalities of the track, and the evilsnecessarily resulting from connecting a portion of the mechanism withthe crank axle and another portion with the spring supported frame ofthe locomotive are prevented.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

l. The combination with an. imparting motion device including a rotaryshaft, and a plurality of crank elements, of mechanism for connectin thecrank elements with the cross heads 0 a locomotive, and means forconnecting the imparting motion device with a valve gear.

' 2. The combination with a valve gear, of an imparting motion deviceconnected with the valve gear and including a rotary shaft having a pairof crank elements arranged at an angle and mechanism for connecting thecrank elements with the cross heads at opposite sides of a locomotive.

3. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears and including a rotary shaft, and a pair of cranksarranged at an angle, and means for connecting the cranks of eachimparting motion device with each of the cross heads of the locomotive.

4. The combination with the valve gears of, a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears and including a rotary shaft and a pair of cranksarranged at an angle, transverse rock shafts extending across thelocomotive and each connected with one of the reciprocatory cross headsthereof, and means for connecting each .rock shaft with one of thecranks of each of the imparting motion devices.

5. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears andincluding a rotary shaft, and a pair of cranksarranged at an angle, and transverse rock shafts extending across thelocomotive and provided at opposite sides thereof with arms connectedwith the cranks of the imparting motion devices, each of the rock shaftshaving one of its arms connected to one of the cross heads.

6. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears and including a rotary shaft, and a pair of cranksarranged at an angle, transverse rock shafts extending across thelocomotive and provided at its ends with arms, links or rods connectingthe arms of-the rock shafts with the cranks of the imparting motiondevices, and means for connecting one of the arms of each'of the rockshafts with one of the reciprocatory cross heads of the locomotive.

7. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and-connectedwith the valve gears and including a rotary shaft, and a pair of cranksarranged at an angle, transverse rock shafts extending across thelocomotive and provided with reversely arranged long and short arms,links or rods connecting the arms of the rock shafts'with the cranks ofthe impartingmotion devices, and means for connecting the long arms ofthe rock shafts with the reciprocatory cross heads of the locomotive.

8. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears 1 and including a rotary shaft, and a pair ofcranks arranged at an angle, transverse rock shafts extending across thelocomotive and provided with reversely arranged long and short dependingarms, the short arms being locatedat the opposite sides of thelocomotive and connected with two of the cranks of the imparting motiondevices, and the long arms being also arranged at the opposite-side ofthe locomotive and forming levers connected at their lower-ends with the.reciprocatory cross heads of the locomotive shafts arranged-inparallelism and extending across the locomotive and provided withreversely arranged long and short depending arms, approximatelyhorizontal rods or links extending rearwardly from the arms of the rockshafts and connected with the cranks of the imparting motion devices,and j other links arranged approximately horizontal and connecting theother arms of the rock shafts with the reciprocatory cross heads of thelocomotive.

10. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve ears and including a rotary shaft, and a pair of cranksarran ed at an angle, transverse rock shafts exten ing across thelocomotive and provided with depending arms connected with the cranks ofthe imparting motion devices, plates carried by the reciprocatory crossheads of the locomotive and projecting therefrom to form rigid arms, andlinks pivoted to the plates and connected to one of the arms-of each ofthe rock shafts.

11. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears and including a rotary shaft, and a pair of cranksarranged at an angle, transverse rock shafts extending across thelocomotive and pro-' vided with depending arms connected with the cranksof the imparting motion devices,

front endswith an arm of each of the rockshafts.

12. The combination with the valve gears of a locomotive, of impartingmotion devices located at opposite sides of the locomotive and connectedwith the valve gears and including a rotary shaft, and a pair of cranksarranged at an angle, transverse rock shafts extending across thelocomotive and provided at their ends with reversely arranged long andshort depending arms,

links or rods connecting each ofthe arms of the rock shafts with a crankof each of the imparting motion devices, plates mounted on the crosshead of the locomotive and extending rearwardly therefrom, and otherlinks extending rearwardly from the long arms of the rock shafts andconnected with the said plates.

13. The combination with the valve gears of a locomotive, of oppositeimparting motion devices connected with the valve gears links .or rodsextending rearwardly from the arms of the rock shafts and connected withthe cranks of the imparting motion-devices,

plates mounted on the cross heads of the locomotive and extendingrearwardly therefrom, and other links extendin' rearwardly from the longarms of the rocr shafts and connected with the outer portions ofthe saidplates.

14. The combination withthevalve gears ofa locomotive, of impartingmotion devices arranged in advance of the valve gears and includingcrank elements arranged at an angleito each other, transverse rockshafts located in advance of the imparting motion devices and havingarms connected with the cranks thereof, and means for connecting one ofthe arms of each of the rock shafts with one of the cross heads of thelocomotives.

15. The combination of imparting motion devices located at oppositesidesof a locomotive and including crank elements arranged at an angleto each other, mechanism for connecting each imparting mot-ion devicewith each of the cross heads of a locomotive, eccentric arms or rodslocated at opposite sides of the locomotive and actuated by theimparting motion devices, and valve gears connected with the eccentricarms or rods and located in rear of the. imparting motion devices 16.The combination of an imparting motion device including crank elementsarranged at an angle to each other, mechanism for connecting theimparting motion device with each of the cross heads of a locomotive, aneccentric arm or rod extending rearwardly from the imparting motiondevice and actuated by the same, an intermediaterocker arm located abovethe eccentric arm or rod at a point intermediate of the ends thereof, anintermediate link connected with the rocker arm and with the eccentricarm or rod at a point between the ends of the latter,

means for transmitting motion from the rocker arm to a valve, an endrocker, an end link connectingthe end of the rocker arm with theeccentric arm or rod, and 'reversing mechanism havin aradius linkconnected with the end roc. er arm and with the eccentric arm or rod.

17. The combination of an imparting motion device including crankelements arranged at an angle-to each other, mechanism for connectingthe imparting motion device with each of the cross heads of alocomotive,

an eccentric arm or rod extending rearthereof, an intermediate linkconnected with the rocker arm and with the eccentric arm or rod at apoint between the ends of the latter, means for transmitting motion fromthe rocker arm to. a valve, an end rocker arm located above theeccentric arm or rod and pivoted at its rear end, an end link connectinthe end rocker arm with the rear end 0 the eccentric arm or rod,reversing mechanism having a radius link connected with the end rockerarm, and a rod connecting the radius link with'the eccentric arm or re v18. The combination of a valve gear frame having bearings, an impartingmotion de vice including a rotary shaft mounted in the bearings of thevalve gear frame and having crank elements arranged at an angle,mechanism for connecting the crank elements with each of the crossheadsof a locomotive, and valve gears mounted on the valve gear frame andactuated by the imparting motion device. I

19. The combination of a valve gear frame having opposite bearings, animparting moments of the imparting motion device with each of the crossheads of a locomotive, and valve gears mounted on the valve gear frameand actuated by the imparting motion device.

20. The combination of valve gear frames located at opposite sides of alocomotive and having brackets rigidly connected with the valve gearframe at the front end thereof and providedwith bearings, impartingmotion devices including rotary shafts mounted in the bearings of thegear frames, and crank elements arranged at an angle to each other,transverse rock shafts journaled in the bearings of the brackets andsupported by the latter and provided with depending arms, one of thearms of each rock shaft being extended to form levers located atopposite sides ofthe locomotive, links or rods pivoted to the said armsand connecting each of the rock shafts with a crank element of each ofthe imparting motion devices, and means for connecting the extended armsor levers with the cross heads of the locomotive.

In testimony, that I claim the foregoing as my own,'I have heretoaflixed my signature in the presence of two Witnesses.

HENRY J. PILLIOD. lVitnesses:

CARL W. HUNT, HARRY DE JOANNIS.

